: The manufacturer recommends API GL-4 or GL-5 SAE 75W-90 gear oil.
: Many enthusiasts on r/SciontC recommend Red Line MT-90 (GL-4) specifically, as GL-5 fluids sometimes contain sulfur-based additives that can prematurely wear down "yellow metal" synchronizers over time. 2006 Scion Tc Manual Transmission Fluid
For owners of the with a manual transmission , keeping your gear oil fresh is one of the most effective ways to prevent the common 2nd-gear grind and maintain smooth shifting. Fluid Specifications & Capacity : The manufacturer recommends API GL-4 or GL-5
: You will need approximately 2.6 quarts (2.5 liters) for a full refill. Maintenance Interval 2006 Scion TC 2.4L 4 -cyl Engine Code 2AZ-FE 4 - AMSOIL 2006 Scion Tc Manual Transmission Fluid